<HTML><HEAD><TITLE>jd_to_mjd(++JD, ?MJD)</TITLE>
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<H1>jd_to_mjd(++JD, ?MJD)</H1>
Convert Julian Dates (JD) to Modified Julian Dates (MJD)
<DL>
<DT><EM>JD</EM></DT>
<DD>Integer or float
</DD>
<DT><EM>MJD</EM></DT>
<DD>Variable or float
</DD>
</DL>
<H2>Description</H2>
Convert Julian Dates (JD) to Modified Julian Dates (MJD). The relationship is simply MJD = JD-2400000.5

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